Bag-tying machine



July 22 1924. L. D. NELSON BAG TYING MACHINE Filed Sept. 11, 1922 5 Sheets-Sheet 1 IL h INVENTOR. Lew/i: D. lVe/son ATTORNEYS July 22 1924.

L. D. NELSON BAG TYING MACHIN' Filed Sept. 11 1922 3 Sheets-Sheet 2 INVENTOR. Lew/Ls D. Ive/Lyon A TTORNEYS L. D. NELSON BAG TYING MACHI-NE Filed Sept. 11, 1922 3 Sheets-Sheet 5 INVENTOR. Lew/Ls D. Memo/7 A TTORNEY.S

T B3619 K Q Patented July 22, 1924.

UNIT-ED LEWIS D. NELSON, OF GOL-DWATE MICHIGAN.

BAG-TYING MACHINE.

Application filed September 11, 1922. Serial No. 587,615.

To all whom it may concern.

Be it known that I, Lnwrs D. NELSON, a citizen of the United States, residing at Goldwater, county of Branch, State of lVIiclligan, have invented certain new anduseful Improvements in Bag-Tying Machines, of which the following is a specification.

7 This invention relates to improvements in bag tying machines.

My present improvements relate to bag tying machines of the type illustrated in my application for Letters Patent filed Nov. 10, 1920, Ser. No. 423,205 and, in some respects, is an adaptation and improvement upon the structure there illustrated.

The main objects of the invention are: 7

First, to provide an improved bag tying machine which is of large capacity and at the same time simple and economical in structure. a

Second, to provide in a bag tying machine an improved tie feeding means.

Third, to provide an improved bag tying machine which may be operated with a minimum of effort on the part of the operator.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow I accomplish the objects of the invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A'structure which is a preferred em-" bodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this application, in which:

Fig. I is a side elevation of a bag tying machine embodying the features of my in vention.

Fig. II is a fragmentary plan view thereof. 7

.Fig. III is a .detail horizontal section on a line corresponding to line 3-3 of Fig. I. Fig. IV is a detail transverse vertical section on a line corresponding to line 44 of Figs. II and V.

I Fig. V is a detailyertical section on a line corresponding to line 5-5 of FigsII and IV showing details of the tie feeding means. I v Fig. VI is a detail vertical section similar to that of Fig. V showing the feeding means a line corresponding to line 7-7 of Figs. I and III, showing details of the reel and of the plunger return mechanism.

Fig. VIII is a detail section on a line corresponding to line 88 of Fig. VII showin details of the reel retaining means.

Fig. X is a detail fragmentary view on a line corresponding to line 9-9 of Fig. X.

Fig. X is a detail section on a line corresponding to line 10'10 of Fig. IX.

Fig. XI is a detail plan view showing the manner of forming the tie.

Fig. XII is a detail section on a line-corresponding to line 12.12 of Fig. V, showing further details of the feed means.

Fig. XIII is a detail plan view showing.

details of the spindle guide.

Fig. XIV is an enlarged detail side elevation of the tie engaging hooks, the hooks being shown. in retracted position by dotted lines and partially extended by full lines.

In the drawing similar reference characters refer to similar parts throughout the several views and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing, the base 1 is adapted for mounting upon a table or other support, not illustrated. The spindle 2 is supported for rotative and longitudinal movement by the tubular member 3 rigidly supported in the frame and having a spiral slot i-therein with a longitudinal extension 5 at its rear end, the slot being adapted to coact with the pin 6 on the spindle 2. When the spindle is drawn forwardly the pin riding in the slot holds the spindle against rotation throughout the traverse'of the pin on the straight portion 5 of the slot and rotates it during its traverse in the spiral portion thereof.

On the front end of the spindle are tying hooks or fingers 7 pivotallv mounted on the pin 8 carried by the head 9 of the spindle. The hooks are held normally separated by the coiled spring 10,'.see Fig. IX. The hooks are provided with rearwardly directed conical points 11 adapted to'receive the eyes 12 of the ties 13 as. they are fed down the feed chute, designated generally by the numeral la. r r a V With the tieengaged with the hooks a bag, as 15, is placed to the rear of the tie anda forward pull on the bag draws the spindlej 2 forwardly, the first portion of i s movement being merely lo g tudina as stated, until the pin 6 passesinto the spiral when a rotating or twisting movement is imparted to twist the tie as shown. in Fig. XI.

The spindle is drawn forwardly against the tension of a spring, not illustrated, arranged within the drum 16,, a cable 17 connecting the drum to the spindle so that when thecyes of the tie are separated from the hooks the spindle is retracted. The longitudinal portion 5 of the groove insures the proper positioning of the hooks to'receive another tie. To assist in this aligningand relieve the pin 6 of a portion ofthe strain I provide a guide comprising pair of plates 18 and l9,the plate 19 having a forwardly curved guide portion 20' guiding the pin 21 into the slot-like space 22 hetweenthe plates, the spiral movement of the pin as the spindle is retracted being indicated by dotted lines. It will be observed, that its rotation carries it into, engagement with the guide finger 20 and, thence into the slot. This materially reduces the shock and strain on. the parts.

The feed chute 14 comprises pair of bars 23 having; beveled ends 24% adapted to coact with the hooks when they are in their retracted position. Theties are strung upon wires 25 wound upon a spool or reel 26 supported on the holder 27 at the rear of the machine. A pivoted arm is provided for holding the spool spindle 29 in the slotted bearing,see Fig. VIII.

A pair of bars 30 is spaced above the bars to receive the ties between them.

The ties are fed from the reeling wires, 25

by means comprising a rocker 31 having pairs of fingers 32 and 3.3 at each side of its pivotal center, these fingers being supported by the guides 34 so as to receive a tie between them as shown in Fig. V, the front fingers serving as stops when 'therear are retracted to permit a tie to feed forward, the front fingersbeing lowered and the rear fingers projected .to form a stop when the .iront fingers are retracted to discharge, a, tie. [he ties discharged by the fingers 32 slide down thechute, springs 35 being provided on the chute bars as shown inFi L- H and IV to properly position the eyes,. springs terminating in front cit the hooks curving downwardly and swinging over the points of the hooks. This simple means, insures the engagement of the eyes of;the ties with the hooks.v

The rocl'reris actuated bymea ll$ of the tappet rod 36 slidably supportedfin' the frame and connected tothe arn 3Ton the rocker by means of a pin and slo connection38 as shown by dotted linesinQFig. V.

v. 2. coiled springs; Whichis, placed under comp ess any the return, 'm'oveineiit er the spindle ngaging flie reartap'perse tappet red is provided withtappets 39 't g withthe tappejt 40 on thesp'ndle.

actuates the rocker as soon as the tappet rod is released on the forward movement of the spindle.

With this arrangement the ties are automatically fed and properly positioned so that their eyes engage the bills of the hooks 11.

My improved tying machine is of large capacity and greatly increases theoutput of a workman. My present machine is, as stated, an improvement and adaption of the machine of my said application resulting from practical use thereof Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1 In a machine fol-tying bag ties, the combination ofa spindle moufite'dftor longitudiiial'and rotative .moveme means for rotating said spindle compris ng a tubular member having aspiral slot th'ei'eiirwith a longitudinal extension at the rear end'ot the slot, tie enga-gii1ghookspiyotallymounted on said spindle a pin at the forward end of said spindle, and positioningmeans coacting with said pin and comprising apail, of plates spaced to provide a guiding groove one of said plates having a forwart llyprojecting curved finger 2. In a machine for tying bag ties, the combination of a spindle mounted for longitudinal and rotative movement, means for rotating said spindle, tie engaging hooks pivotally mounted on said spindle, a pin at the forward end of said spindle, and tioning means coasting with pin and comprising a pair of plates spaced to" pro vide a guiding groove, one of said plates having a forwardly projecting curved finger. I

8. In a machine for tying bag ties, the con'ibiuation of a spindle mounted for longitudinal and. rotative movement, meansii'or rotating said comprising a tubular member having a. spiral slot therein with a longitudinal. extension at the rear end of the slot, tie eng hooks pivotally mounted on said spindle, lug at the forward end of said spindle, and positioning means coacting with and comprising a longi tudinalguidinggroove and a forwardly projectingcurved finger coa'c saidlug to guide it tosa-id groove. l

l. In a machine for ties the combinationof a spindle mounted for longitudinal. and rotative movement, means for rotating. said s'pindle,. tie engaging hooks pivotally mounted on'said spindle, ajlu at.

coasting withsaid lug co-guide it to said groove 551:12. machine for tyin bag ties having eyes at their ends, the combination of a spindle mounted for longitudinal and rotative movement, means for rotating said spindle as it is moved longitudinally, tie

I engaging hooks pivotally mounted on said spindle, a feed chute comprising inclined spaced bars down which the tiesslide, said hooks having rearwardly projecting bills projecting above said bars, a pair of spring guide members adapted to coact with the eyes of the ties as they are discharged to the hooks, and means for successively releasing the ties. V

6. In a machine for tying bag ties having eyes at their ends, the combination of a spindle mounted for longitudinal and rotative movement, means for rotating said spindle as it is moved longitudinally, tie engaging hooks pivotally mounted on said spindle, a feed chute comprising inclined spaced bars down which the ties slide, said hooks having rearwardly projecting bills projecting above said bars, a pair of guide members adapted to coact with the eyes of the ties as they are discharged to the hooks, and means for successively releasing the ties.

7. In a machine for tying bag ties having eyes at their ends, the combination of a spindle mounted for longitudinal and rotative movement, means for rotating said spindle as itis moved longitudinally, tie engaging hooks pivotally mounted on said spindle, a feed chute comprising inclined bars down which the ties slide, said hooks having rearwardly projecting bills projecting above said bars, guide members adapted to coact with the eyes of the ties as they are discharged to the hooks, means for successively releasing the ties to said guide member comprising a rocker, fingers pivotally mounted on saidrocker at opposite sides of its axis whereby one finger is retracted as the other is projected into the path of the ties, and operating connections-from said rocker to said spindle.

8. In a machine for tying bag ties, the combination of a spindle mounted for longitudinal and rotative movement, means for rotating said spindle as it is moved longitudinally, tie engaging hooks pivotally mounted on said spindle, a feed chute down which the ties slide, means for successively means for operating releasing the ties comprising a rocker, fingers pivotally mounted on said rocker at opposite sides of its axis whereby one finger is retracted as the other is projected into the path of the'ties, and operating connections from said rocker to said spindle.

9. In a machine for tying bag ties having eyes at their ends, the combination of a spindle mounted for longitudinal and rotative movement, means for rotating said spindle as it is moved longitudinally, tie engaging hooks pivotally mounted on said spindle, a feed chute comprising inclined. bars down which the ties slide, said hooks having rearwardly projecting bills projecting above said bars, guide members adapted to coact with the eyes of the ties as they are discharged to the hooks, and means for successively releasing the ties to said guide members comprising a rocker, fingers pivotally mounted on said rocker at opposite sides of its axis whereby one finger is retracted as the "other is projected into the path of the ties.

10. In a machine for tying bag ties, the

combination of a spindle mounted for longi tudinal and rotative movement, means for rotating said spindle as it is moved longitudinally, tie engaging hooks pivotally mounted on said spindle, a feed chute down which the ties slide, and means for successively releasing the ties comprising a rocker, fingers pivotally mounted on said rocker at opposite sides of its axis whereby one finger is retracted as the other is projected into the pathof the ties.

11. In a machine for tying bag ties, the combination of a spindle mounted for longitudinal and rotative -movement, means for rotating said spindle as it is moved longitudinally, tie engaging hooks pivotally mounted on said spindle, a feed chute comprising inclined bars down which the ties slide to the hooks, means for successively releasing the ties comprising a pair of fingers mounted for alternate'reciprocatory movement transversely of said chute and adapted to receive one of the ties between them, and

said fingers syn- LEWIS D. NELSON. [L. s] 

